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[GUIDE][UPDATED] Unlocking JioFi 3 JMR540 & JMR541 for all networks

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pranay_panji

New member
Oct 5, 2021
1
0
@abhimortal6 Hey man, thanks for the post. I was able to do all the steps easily and the device also reacted the same way as you mentioned.
However, after a week of usage I can't get any signal (middle light keeps blinking red).

I did the steps again but still no success.
Also my firmware changed to R6.20 FYI, is this the reason it stopped working? Can you help me?

Thanks in advance

Device: JMR540
 
Last edited:

vishnuraj.r

Member
Nov 25, 2014
9
2
Unlocked Firmware for JioFi 3 JMR540 & JMR541

Disclaimer
I am not responsible for any kind of damage to your device.
Use this firmware at your own risk
Post is for educational purpose only.


ONLY FOR JMR 540 & JMR 541


I was able to dump and reverse engineer JioFi 3's firmware to see if I can unlock the SIM restrictions. JioFi 3 is designed by Foxconn it uses generic firmware. Unlocking took time though. Tested with Vi, Airtel.



Guide

Make sure you're on same firmware version
  • JMR 540 - FXN_JMR540_R6.16
  • JMR 541 - FXN_JMR541_R3.10
If not please use the device for sometime it'll autoupdate.


1. Locate your device model and download the respective Firmware and extract it to a known location


2. Install drivers and tools (skip if already installed)

  • Install Fastboot drivers ( google it for mac and linux it's easy to find)
  • Install Fastboot ( google it for mac and linux it's easy to find)

3. Prepare device

  • Remove battery from JioFi 3
  • Locate reset pin hole button
  • Lay down JioFi 3
  • Use Paper Clip / SIM Ejector Tool to press button inside (using sharp object is not recommended)
  • Keep pressing button down and insert USB cable
  • Release button as soon as all the LEDs in Display turns RED. This means device is in boot loader mode

4. Flashing Unlocked Firmware

  • Open adb and fastboot tools terminal
  • Enter following to check if device is connected

  • fastboot devices

  • It will return something like this
  • baxxxxx fastboot

  • This means device is connected. If your device doesn't show up here please check drivers in Device manager
  • Now first erase the system partition

  • fastboot erase system

  • It will return something like this
  • erasing 'system'... OKAY [ 1.104s] finished. total time: 1.105s

  • Now flash the firmware
  • fastboot flash system "D:\system.img" ( replace path )

  • It should return something like this
  • sending 'system' (34306 KB)... OKAY [ 1.276s] writing 'system'... OKAY [ 9.462s] finished. total time: 10.741s

  • Now send reboot command to device
  • fastboot reboot

  • You'll notice device will reboot normally now you can unplug the cable.

Congratulations your device is now unlocked and you can reinsert battery and another SIM for testing.

Firmware will take long time than usual to boot do not panic.

4. Changing APN
  • Insert SIM connect with JioFi 3 wait it to intialize
  • Open Web UI from browser (http://jiofi.local.html/)
  • Now login (default username/pwd is administrator/administrator)
  • In Network Tab you'll find setting for changing APN
  • Put it on manual and enter "internet" as APN (without quotes)
  • Hit apply/save device will reboot again automatically and it'll auto connect
  • Just wait patience is the key here it'll connect.

If something goes WRONG or you want to UNDO you can re flash original firmware which is provided in this post.


Original backup




FAQs

  1. Q. My device is not visible in fastboot devices
    A. Confirm driver installation a faulty cable can also be the issue.
    .
  2. Q. Everything went well but still no changes in dashboard
    A. After successful flash if you still don't see the changes your device is probably booting from recovery partition. Try flashing recovery partition by
    fastboot erase recoveryfs
    fastboot flash recoveryfs "D:\system.img"
    .


  3. Q. After resetting device from pin hole button it shows INVALID SIM.
    A. This is supposed to happen just reboot the device it'll work again.
    .
  4. Q. Can I undo all this and get back to original firmware
    A. Yes just flash the original firmware provided in post and reset the device.







Mentions:
Thanks to
Karuppusamy for testing it on JMR541.


What about JioFi 2, 4, 5, 6?
Reverse Engineering takes lot of time and coffee. Until I get physical access to device I won't be able to unlock it. I'm constantly searching them on OLX as soon as I get hands on I'll surely try to RE and unlock it. I'll update the same here if there is no update here at the time of your reading then I haven't got the device yet so please don't spam for update hope you understand that I don't get anything by doing these things, I do it for liberation of locked hardware to meet it's real destiny and of course for the people. I also have a day job so no I cannot guide or teach you, hope you understand why.



Thanks a lot bro.. works like charm.. but i had to install google usb drivers manually to detect device...
 

Ankurrathi631

New member
Sep 25, 2021
1
0
Hello sir can you provide the recovery file because i accidentaly erase recovery file not recoveryfs file.....Boot file needed please help sir.
 

sdomermpc

Member
Aug 15, 2014
16
1
My wifi gets automatically turned off exactly at 12 in morning and night, does any else facing the same issue?
 
Last edited:
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Reactions: savin_me

sdomermpc

Member
Aug 15, 2014
16
1
Yes,I am also facing same issue. I first thought I had an issue with my charger and I had tried with many chargers but issue had not resolved.
It started from last week, but prior to that I was using vi and Airtel, didn't face this problem. Now on jio sim, it switches off wifi exactly at 12pm, 6pm and 12am.
maybe jio is pushing this setting over the internet.

right now without the admin help, the only way is to turn off the device during these specific Times. I mean connecting to pc with usb is pain and so is resetting every time when wifi goes off
 
Last edited:

Raj.S

Senior Member
Dec 31, 2015
178
100
22
Jamshedpur
Thanks for your work, Can you please tell me how do you get shell access? as adb devices shows nothing at all. Also can you please provide the modified firmware sources?

I am also looking for hardware specifications, maybe someday we will get openwrt working. I am not willing to open my jiofi atm.
 
Last edited:
Hi @abhimortal6
Recently i got a JMR1140 from a friend, i wanted to change few things on it so i decided to edit the firmware on it.
It doesn't have a fastboot mode, just Qualcomm's EDL mode. I opened it just to find that it has JTAG pins instead of UART.
Then i decided to edit the UBI image.
If i create a UBI image from the unmodified rootfs then the device boots just fine. But if i repack the UBIFS image with or without any modifications the device refuses to boot. Any idea?

I edit the image without unpacking (hex edit) i was able to edit that. But UBIFS repack isn't working for me. Don't know what I'm going wrong. Size and all are all correct.
Hi can you please share image of JTAG Pins for JMR1140 here
 

Sumandhara177

New member
Jan 31, 2017
3
0
It started from last week, but prior to that I was using vi and Airtel, didn't face this problem. Now on jio sim, it switches off wifi exactly at 12pm, 6pm and 12am.
maybe jio is pushing this setting over the internet.

right now without the admin help, the only way is to turn off the device during these specific Times. I mean connecting to pc with usb is pain and so is resetting every time when wifi goes off
Same problem with my jiofi also only showing battery icon and network icon green but no light in wifi symbol because turned of
 

Anshul098

New member
Feb 26, 2019
3
0

Attachments

  • jiofi.png
    jiofi.png
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Sumandhara177

New member
Jan 31, 2017
3
0
Please help....
My jiofi's wifi automatically disabled at 12am every day. I have to enable wifi by using pc or some time resetting the device.
 

savin_me

New member
Oct 12, 2021
3
0
Chennai, India
I was able to successfully unlock the JIOFI3 JMR540 but the wifi is getting disabled after a day or two and again i have to tether it to my pc to enable it . It keeps getting disabled frequently. I tried reinstalling the hacked firmware provided in this site, i tried to flash the firmware as well but the problem still remains . Any idea on how to resolve this issue.
1634008036586.png
 

sdomermpc

Member
Aug 15, 2014
16
1
guys who have jiofi wifi turning off automatically at 12am, 6pm and 12pm. Kindly flash with original firmware and post the results here
 

vasanthraja14

Member
Nov 25, 2014
15
1
Same here in my JMR540, Vi is not working but Airtel is working perfectly. Because of jiofi support these band Band 3/5/40 i.e. 1800/850/2300. And none of them is used by Vi so not getting connected. Try calling Vi to fix it using pretext that Vi is sim not working in Dongle (say other sim like jio Airtel is working) . Dont tell them it's jiofi. 😆 Tell them dongle is of huawei.
Any solution for VI network to work in this dongle
 

Top Liked Posts

  • There are no posts matching your filters.
  • 1
    Please tell me the whole process of shell access
    You're not follwing the thread, the sole purpose of this 'unlocking simlock' was only to unlock the simlock, not modifying 'Jio4G Voice Call APK' app modification (lol) and making it available for vodafone and airtel and bsnl and all the other networks, or getting shell access and changing it's bandwith or using it as a wifi extender or attaching a camera and using it as CCTV camera and etc etc.
    Yes, all those things (except modifying jiocall apk) are possible (as the developer said) but somebody needs to work on those things to make it work but clearly he said he has no time for all of these and he's not getting anything out of this. So, as of now your only option to use it as a unlocked 4G Hotspot and nothing else.
    1
    HI one question About a month ago my modem was automatically upgraded to the hacked firmware but unfortunately I accidentally selected "restore to original firmware" option and it reverted back to the original locked firmware.
    How can I change the firmware back to the hacked version? If I wait will it be upgrade itself to the hacked firmware?
    No you have to flash modified firmware again, but before that check your current FW version if it is 3.20 then you cannot flash modified FW
    1
    my device is not even getting detected in the fastboot menu
    Use google platform tools. Download from Here. Extract it to D drive and copy extracted location path.
    Add this path in Environment Variable -> System variable ->Path.
    Then it will detect in fastboot.
    Always open CMD from Platform tools folder.
    1
    please

    FAQs 6

    1. Q. FAILED: (remote: Image is locked) issue while erasing/flashing image

    2. A. Jio recently pushed an firmware update which re-locks simlock and bootloader which basically means you can't flash unsigned/custom firmware. Currently there is no fix.
    1
    please

    FAQs 6

    1. Q. FAILED: (remote: Image is locked) issue while erasing/flashing image

    2. A. Jio recently pushed an firmware update which re-locks simlock and bootloader which basically means you can't flash unsigned/custom firmware. Currently there is no fix.
    I think your JMR541 has been updated to 3.16. 😢😢
    AS OP @abhimortal6 mentioned in 1st post that default firmware version was quoted below
    Make sure you're on same or lower firmware version

    • JMR 540 - FXN_JMR540_R6.16
    • JMR 541 - FXN_JMR541_R3.10
  • 40
    Unlocked Firmware for JioFi 3 JMR540 & JMR541

    Disclaimer
    I am not responsible for any kind of damage to your device.
    Use this firmware at your own risk
    Post is for educational purpose only.


    ONLY FOR JMR 540 & JMR 541


    I was able to dump and reverse engineer JioFi 3's firmware to see if I can unlock the SIM restrictions. JioFi 3 is designed by Foxconn it uses generic firmware. Unlocking took time though. Tested with Vi, Airtel.

    UPDATE 17-10-21: Jio pushed a firmware update which is locking boot loader. If your device is not updated yet it is advised to re-flash your firmware with patched image given below which basically disables auto updates. If you're already locked out, currently there's no easy fix for that.

    If you haven't used your device from a long time or you're still on lower or equal version than below it is advised not to use JioFi with SIM, flash this firmware first if you want to test SIM unlock.




    Guide

    Make sure you're on same or lower firmware version
    • JMR 540 - FXN_JMR540_R6.16
    • JMR 541 - FXN_JMR541_R3.10
    If not please use the device for sometime it'll autoupdate.


    1. Locate your device model and download the respective Firmware and extract it to a known location


    2. Install drivers and tools (skip if already installed)

    • Install Fastboot drivers ( google it for mac and linux it's easy to find)
    • Install Fastboot ( google it for mac and linux it's easy to find)

    3. Prepare device

    • Remove battery from JioFi 3
    • Locate reset pin hole button
    • Lay down JioFi 3
    • Use Paper Clip / SIM Ejector Tool to press button inside (using sharp object is not recommended)
    • Keep pressing button down and insert USB cable
    • Release button as soon as all the LEDs in Display turns RED. This means device is in boot loader mode

    4. Flashing Unlocked Firmware

    • Open adb and fastboot tools terminal
    • Enter following to check if device is connected

    • fastboot devices

    • It will return something like this
    • baxxxxx fastboot

    • This means device is connected. If your device doesn't show up here please check drivers in Device manager
    • Now first erase the system partition

    • fastboot erase system

    • It will return something like this
    • erasing 'system'... OKAY [ 1.104s] finished. total time: 1.105s

    • Now flash the firmware
    • fastboot flash system "D:\system.img" ( replace path )

    • It should return something like this
    • sending 'system' (34306 KB)... OKAY [ 1.276s] writing 'system'... OKAY [ 9.462s] finished. total time: 10.741s

    • Now send reboot command to device
    • fastboot reboot

    • You'll notice device will reboot normally now you can unplug the cable.

    Congratulations your device is now unlocked and you can reinsert battery and another SIM for testing.

    Firmware will take long time than usual to boot do not panic.

    4. Changing APN
    • Insert SIM connect with JioFi 3 wait it to intialize
    • Open Web UI from browser (http://jiofi.local.html/)
    • Now login (default username/pwd is administrator/administrator)
    • In Network Tab you'll find setting for changing APN
    • Put it on manual and enter "internet" as APN (without quotes)
    • Hit apply/save device will reboot again automatically and it'll auto connect
    • Just wait patience is the key here it'll connect.

    If something goes WRONG or you want to UNDO you can re flash original firmware which is provided in this post.


    Original backup




    FAQs

    1. Q. My device is not visible in fastboot devices
      A. Confirm driver installation a faulty cable can also be the issue.
      .
    2. Q. Everything went well but still no changes in dashboard
      A. After successful flash if you still don't see the changes your device is probably booting from recovery partition. Try flashing recovery partition by
      fastboot erase recoveryfs
      fastboot flash recoveryfs "D:\system.img"
      .


    3. Q. After resetting device from pin hole button it shows INVALID SIM.
      A. This is supposed to happen just reboot the device it'll work again.
      .
    4. Q. Can I undo all this and get back to original firmware
      A. Yes just flash the original firmware provided in post and reset the device.
      .
    5. Q. I 'accidentally' flashed my recovery and boot partition
      A. Well accidentally I've backed up recovery and boot download from below

      1.
      JMR540_boot_recovery.rar
      2. JMR541_boot_recovery.rar
      .
    6. Q. FAILED: (remote: Image is locked) issue while erasing/flashing image
      A. Jio recently pushed an firmware update which re-locks simlock and bootloader which basically means you can't flash unsigned/custom firmware. Currently there is no fix.







    Mentions:
    Thanks to
    Karuppusamy for testing it on JMR541.


    What about JioFi 2, 4, 5, 6?
    Reverse Engineering takes lot of time and coffee. Until I get physical access to device I won't be able to unlock it. I'm constantly searching them on OLX as soon as I get hands on I'll surely try to RE and unlock it. I'll update the same here if there is no update here at the time of your reading then I haven't got the device yet so please don't spam for update hope you understand that I don't get anything by doing these things, I do it for liberation of locked hardware to meet it's real destiny and of course for the people. I also have a day job so no I cannot guide or teach you, hope you understand why.



    3
    after knowing from u guys about recent update pushed by jio my device wasn't updated so i instantly removed the sim and waiting for update from abhi
    For Jio --- guys u have stopped selling this or selling in 5k -6k like black marketing and nor your devices are built well, if someone has unlocked it what's the problem you have not pushed any update to other models which were previously unlocked now those devices are being sold at higher prices. I am happy that airtel and vi are here otherwise your greediness to capture everything would have led us to ______ no words to describe'
    You can install and test patched firmware auto updates are patched and disabled now, link is in original post. Devices which are already updated, there is no easy fix for them right now. Jio loves their users aww ( throws JioFi in space ).
    3
    bro is unlocking more 4g bands or manual selection of bands can be done ?
    Totally possible even 3G but it can't be done through WebUI it'll requires shell access.
    2
    Working fine but only one issue that it is auto updating to official firmware within couple of days and we need to redo the entire process again.
    Any way to stop the auto update of firmware
    2
    1622625406032.jpeg

    This is completely genius! I am now able to use Airtel sim on my JioFi! Thanks!